Ice-making machine.



W. E. BROWNING.

yme MAmNGMAcHmE. APPLICATION HLED MAY 21, 1914.

commun/A x'LANuuAlm cu..wAsmNnToN. DY C.

Patented Jan. 45 1916.

E PEN o wILLrAM EDWARD EEowNNe, 0E LoNDoN, ENGLAND, AssreNoE To EAMPDENSLIMITED, 0E LONDON, ENGLAND.

ICE-MAKING MACHINE.

To all whom t may concern.

Be it known that I, l/VILLIAM EDWARD BROWNING, subject of the'King ofEngland, residing at London, in England, have invented certain new anduseful Improvements in Ice-Making Machines, of which the following is aspecification.

This invention relates to machines for making ice of the kind in whichan annular mold is immersed in a freezing mixture which is agitated byrotary paddles orthe like.

The object of this inventionis to provide a portable machine of thistype especially adapted to domestic use which will rapidly produce solidice and from which the ice, when made, can readily be removed.

According to this invention the apparatus comprises an outer casing ortub preferably of insulating material adapted to contain a freezingmixture and having removably supported within it an annular mold, therelative dimensions of the casing and mold being such that spaces areprovided for the freezing mixture between the outer wall of the mold andthe casing andl within a central chamber with which the mold isprovided.

Paddles operatively connected to a rotatable shaft are provided toagitate simultaneously the freezing mixture within the central chamberand around the mold, the freezing mixture in contact with the inner andouter walls of the mold being thus simultaneously agitated.

The mold comprises separable inner and outer walls the annular base ofthe mold being either rigidly secured to one lof such walls or removablyconnected to both these walls. The arrangement is such that when theliquid contained in the mold has been converted intoice the mold isremoved from the tub and the outer wall o f the Imold is then withdrawnor separated from the inner wall around which the ice is formed. AAllthe ice can then readily be removed from the mold and the componentparts of the latter can be readily cleaned or dried prior to the machinebeing used again. Prefer- Specication of Letters Patent.

ably means are provided to lock the two parts of the moldagainstunintentional separation, for instance a bayonet joint may serve toprevent unintentional separation of the inner and outer walls of themold or a flanged annularbase member may screw on to the lower'ends ofboth the inner and outer walls of the mold.

In the accompanying drawing which shows one form of machine according tothis invention, Figure'l is a central vertical section through themachine, and Fig. 2 is across-section on the line 2-2 of Fig. l.

In the construction illustrated the machine comprises an insulated outercasing in the form of a wooden tub or vat A provided with a removablecover A which also contains or is formed of insulating material. In the-base of the tub` is formed a bearing C for a central spindle C theouter end 0f which projects through a central aperture in thecover A andis provided with an operating 4handle C2 or with a pulley gear wheel orother means wherebythe central spindle may be rotated.

Radiating from the lower end of the shaft C are four arms D the outerends of which extend upward and constitute stirring blades or paddles Dand secured to the spindle C and extending along the lower half thereofare a series of alternating blades or paddles E. y

Mounted within the tub A is an'annular mold comprising an inner wall Fand an outer wall Cr. The mold is supported in any suitable manner forinstance arms G ysecured to the outer wall engage brackets or staples A2connected to the inner wall of the tub, The mold has a removable cover Handan opening is formed in the center of 'this cover and in the upperend of the inner central shaft C can .gral flanged annular base F whichembraces the'lower end of the outer cylindrica l wall Cr to which it isconnected lby means of a kbayonet jointndicated at G2. Alter- PatentedJan. 4, 1916. Application led May 21, 1914. Serial No. 840,117.

natively the fianged base may be carried by the outer wall while yetagain an entirely separable base member of U-cross-section may engage inany suitable manner both inner and outer walls F and G.

1n operation the tub is filled with a freezing mixture of any known kindfor example a mixture of water and nitrate of ammonia or the like. rlChecentral spindle C and the stirring members D it carries are thenintroduced and the mold F G containing the liquid it is desired tofreeze is introduced. The cover H of the mold is then applied, theinsulated cover A of the tub fixed in place and the operating handle C2connected to the outer end of the shaft. The level of the freezingmixture is preferably slightly above that of the liquid contained in themold but not as high as the cover H to prevent any of the freezingmixture finding its way into the mold through the cover. Owing to thelarge surfaces of the mold which are in contact with the freezingmixture and by reason of the stirring or agitating memberssimultaneously bringing about an agitation of the freezing mixture incontact with the inner and outer walls of the mold the contents of thelatter' are rapidly converted into ice. rlhe handle C2 and cover A arethen removed whereupon the entire mold is withdrawn and after thebayonet joint or other locking member has been disconnected at the baseof the mold the outer wall G is separated from the inner wall F. The icewhich has been made within the mold can then be readily removed from thecylindrical surface on which it is supported and when so removed thecomponent parts of the'mcld can rapidly be dried or cleaned prior to themachine being stored away or again put into operation.

It will be appreciated that although the container for the freezingmixture has been above described as being in the form of a wooden tub ifdesired any other insulated vessel may be provided while further theparticular' co-nstruction of the agitating members and the method inwhich the mold is supported within the tub may be varied withoutdeparting from this invention.

VJ hat I claim as my invention and desire to secure by Letters Patentis 1. ln a machine for making ice, the combination of a casing, anannular mold having a central chamber removably supported' within thecasing, and comprising separable inner and outer walls, the casing andmold being cf such relative dimensions that spaces are provided for afreezing mixture within 'the central chamber of the mold and between itsouter wall and the casing, a rotatable shaft mounted centrally withinthe casing, and paddles operatively connected to said shaft andcontained in each of the spaces for the freezing mixture.

2. In a machine for makin@ ice, the combination of a casing, an annularmold having a central chamber removably supported within the casing andcomprising separable inner and outer walls, means for locking said wallsagainst unintentional separation, the casing and mold being of suchrelative dimensions that spaces are provided for a freezing mixturewithin the central chamber of the mold and between its outer wall andthe casing, a rotatable shaft mounted centrally within the casing andpaddles operatively connected to said shaft and contained in each of thespaces for the freezing mixture.

3. 1n a machine for making ice, the' oombination of a casing having aspace for a freezing mixture, an annular mold having' a central chamberand comprising separable inner and outer' walls, supporting arms mountedon said outer wall, brackets connected to the inner wall of the casingengaged by the outer ends of said arms, the casing and mold being ofsuch relative dimensions that spaces are provided for a freezing mixturearound the mold and within its central chamber, a rotatable shaftmounted centrally within the casing and paddles operatively connected tosaid shaft and contained in each of the spaces for the freezing mixture.

fl. ln a machine for making ice, the conibination of a casing, having aspace for a freezing mixture, an annular mold having a central chamberand comprising separable inner and outer walls, arms mounted on saidouter wall., brackets secured to the inner wall of the casing` engagedby said arms, a flanged base carried by the inner wall of the mold andadapted to embrace the lower end ofthe outer wall, means for locking thesaid base and outer wall against unintentional separation and means foragitating a freezing mixture within the casing.

5. 1n a machine for making ice, the combination of an insulated casingadapted to contain a freezing mixture, an insulated cover for saidcasing, an annular mold having a central'chamber for the freezingmixture and comprising separable inner and outer walls, means forlocking said walls against unintentional separation, arms car-` ried bythe outer wall of the mold, brackets secured to the inner wall of theinsulated casing engaged by said arms, the casing and mold being of suchrelative dimensions that an annular space is provided for a freezingmixture around the mold, a central shaft extending through the cover androtatably mounted within the casing, stirring arms radiating from thelower end of said shaft adapted to agitate the freezing mixture inv Intestimony whereof I havesigned my the annular space around the mold,paddles name to this specication in the presence of mounted on the shaftadapted to agitate the tWo subscribing Witnesses.

freezing mixture Within the central chamber WILLIAM EDWARD BROWNING. ofthe mold and means outside the easingl Witnesses:A j

for simultaneously rotating the stirring FREDERICK ADOLPH SCHWABACHER,arms and paddles. ROBERT GODDARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

